This lesson presents the sus4 harmony both as a static chord and a melodic move.  Subscribe to my Patreon account where I have included four jam tracks in this lesson, the C5, C, Csus2, and Csus4.  Listen to my podcasts for free, but in order to get the most out of my lessons I suggest downloading my PDF practice sheets and MP3 backing tracks on my Patreon with a $5/month subscription.  Your subscription will give YOU the tools needed to become confident as a musician and afford ME the financial resources to create more podcast lessons. www.patreon.com/conceptsforimprovisation